samples/sound/sound.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        sound.cpp
   3 // Purpose:     Example of sound playing in wxWindows
   4 // Author:      Vaclav Slavik
   5 // Modified by:
   6 // Created:     2004/01/29
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2004 Vaclav Salvik
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 // for all others, include the necessary headers (this file is usually all you
  19 // need because it includes almost all "standard" wxWindows headers)
  20 #ifndef WX_PRECOMP
  21     #include "wx/app.h"
  22     #include "wx/frame.h"
  23     #include "wx/menu.h"
  24     #include "wx/msgdlg.h"
  25 #endif
  26
  27 #include "wx/wave.h"
  28
  29 // ----------------------------------------------------------------------------
  30 // resources
  31 // ----------------------------------------------------------------------------
  32
  33 // the application icon (under Windows and OS/2 it is in resources)
  34 #if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__) || defined(__WXX11__)
  35     #include "../sample.xpm"
  36 #endif
  37
  38 #define WAV_FILE _T("doggrowl.wav")
  39
  40 // ----------------------------------------------------------------------------
  41 // private classes
  42 // ----------------------------------------------------------------------------
  43
  44 class MyApp : public wxApp
  45 {
  46 public:
  47     virtual bool OnInit();
  48 };
  49
  50
  51 class MyFrame : public wxFrame
  52 {
  53 public:
  54     // ctor(s)
  55     MyFrame(const wxString& title);
  56     ~MyFrame() { delete m_sound; }
  57
  58     // event handlers (these functions should _not_ be virtual)
  59     void OnPlaySync(wxCommandEvent& event);
  60     void OnPlayAsync(wxCommandEvent& event);
  61     void OnPlayAsyncOnStack(wxCommandEvent& event);
  62     void OnPlayLoop(wxCommandEvent& event);
  63
  64     void OnQuit(wxCommandEvent& event);
  65     void OnAbout(wxCommandEvent& event);
  66
  67 private:
  68     wxWave *m_sound;
  69
  70     // any class wishing to process wxWindows events must use this macro
  71     DECLARE_EVENT_TABLE()
  72 };
  73
  74 // ----------------------------------------------------------------------------
  75 // constants
  76 // ----------------------------------------------------------------------------
  77
  78 // IDs for the controls and the menu commands
  79 enum
  80 {
  81     // menu items
  82     Sound_Quit = wxID_EXIT,
  83     Sound_About = wxID_ABOUT,
  84     Sound_PlaySync = wxID_HIGHEST + 1,
  85     Sound_PlayAsync,
  86     Sound_PlayAsyncOnStack,
  87     Sound_PlayLoop
  88 };
  89
  90 // ----------------------------------------------------------------------------
  91 // event tables and other macros for wxWindows
  92 // ----------------------------------------------------------------------------
  93
  94 // the event tables connect the wxWindows events with the functions (event
  95 // handlers) which process them. It can be also done at run-time, but for the
  96 // simple menu events like this the static method is much simpler.
  97 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  98     EVT_MENU(Sound_Quit,             MyFrame::OnQuit)
  99     EVT_MENU(Sound_About,            MyFrame::OnAbout)
 100     EVT_MENU(Sound_PlaySync,         MyFrame::OnPlaySync)
 101     EVT_MENU(Sound_PlayAsync,        MyFrame::OnPlayAsync)
 102     EVT_MENU(Sound_PlayAsyncOnStack, MyFrame::OnPlayAsync)
 103     EVT_MENU(Sound_PlayLoop,         MyFrame::OnPlayLoop)
 104 END_EVENT_TABLE()
 105
 106 // Create a new application object: this macro will allow wxWindows to create
 107 // the application object during program execution (it's better than using a
 108 // static object for many reasons) and also implements the accessor function
 109 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 110 // not wxApp)
 111 IMPLEMENT_APP(MyApp)
 112
 113 // ============================================================================
 114 // implementation
 115 // ============================================================================
 116
 117 // ----------------------------------------------------------------------------
 118 // the application class
 119 // ----------------------------------------------------------------------------
 120
 121 // 'Main program' equivalent: the program execution "starts" here
 122 bool MyApp::OnInit()
 123 {
 124     // create the main application window
 125     MyFrame *frame = new MyFrame(_T("wxWindows Sound Sample"));
 126
 127     // and show it (the frames, unlike simple controls, are not shown when
 128     // created initially)
 129     frame->Show(true);
 130
 131     // success: wxApp::OnRun() will be called which will enter the main message
 132     // loop and the application will run. If we returned false here, the
 133     // application would exit immediately.
 134     return true;
 135 }
 136
 137 // ----------------------------------------------------------------------------
 138 // main frame
 139 // ----------------------------------------------------------------------------
 140
 141 // frame constructor
 142 MyFrame::MyFrame(const wxString& title)
 143        : wxFrame(NULL, wxID_ANY, title)
 144 {
 145     m_sound = NULL;
 146
 147     // set the frame icon
 148     SetIcon(wxICON(sample));
 149
 150     wxMenu *menuFile = new wxMenu;
 151     wxMenu *helpMenu = new wxMenu;
 152     wxMenu *playMenu = new wxMenu;
 153     helpMenu->Append(Sound_About, _T("&About...\tF1"), _T("Show about dialog"));
 154     menuFile->Append(Sound_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
 155     playMenu->Append(Sound_PlaySync, _T("Play sound &synchronously"));
 156     playMenu->Append(Sound_PlayAsync, _T("Play sound &asynchronously"));
 157     playMenu->Append(Sound_PlayAsync, _T("Play sound asynchronously (&object on stack)"));
 158     playMenu->Append(Sound_PlayLoop, _T("&Loop sound"));
 159
 160     // now append the freshly created menu to the menu bar...
 161     wxMenuBar *menuBar = new wxMenuBar();
 162     menuBar->Append(menuFile, _T("&File"));
 163     menuBar->Append(playMenu, _T("&Play"));
 164     menuBar->Append(helpMenu, _T("&Help"));
 165
 166     // ... and attach this menu bar to the frame
 167     SetMenuBar(menuBar);
 168 }
 169
 170
 171 // event handlers
 172
 173 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 174 {
 175     // true is to force the frame to close
 176     Close(true);
 177 }
 178
 179 void MyFrame::OnPlaySync(wxCommandEvent& WXUNUSED(event))
 180 {
 181     wxBusyCursor busy;
 182     if (!m_sound)
 183         m_sound = new wxWave(WAV_FILE);
 184     if (m_sound->IsOk())
 185         m_sound->Play(false/*async*/);
 186 }
 187
 188 void MyFrame::OnPlayAsync(wxCommandEvent& WXUNUSED(event))
 189 {
 190     wxBusyCursor busy;
 191     if (!m_sound)
 192         m_sound = new wxWave(WAV_FILE);
 193     if (m_sound->IsOk())
 194         m_sound->Play(true/*async*/);
 195 }
 196
 197 void MyFrame::OnPlayAsyncOnStack(wxCommandEvent& WXUNUSED(event))
 198 {
 199     wxBusyCursor busy;
 200     wxWave snd(WAV_FILE);
 201     if (snd.IsOk())
 202         snd.Play(true/*async*/);
 203 }
 204
 205 void MyFrame::OnPlayLoop(wxCommandEvent& WXUNUSED(event))
 206 {
 207     wxBusyCursor busy;
 208     if (!m_sound)
 209         m_sound = new wxWave(WAV_FILE);
 210     if (m_sound->IsOk())
 211         m_sound->Play(true/*async*/, true/*loop*/);
 212 }
 213
 214 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 215 {
 216     wxString msg;
 217     msg.Printf( _T("This is the About dialog of the sound sample.\n")
 218                 _T("Welcome to %s"), wxVERSION_STRING);
 219
 220     wxMessageBox(msg, _T("About"), wxOK | wxICON_INFORMATION, this);
 221 }